Chair



FIG. 1 is a front elevational view of a chair embodying the present design;

FIG. 2 is a perspective view looking from the rear of the chair of FIG. 1;

FIG. 3 is a top plan view of said chair; and

FIG. 4 is a perspective view looking from the side of said chair. 

The ornamental design for a chair, substantially as shown. 